Veterinarski arhiv, Vol. 70 No. 2, 2000.
Izvorni znanstveni članak
Effect of age and season on some semen parameters of Nili-Ravi buffalo (Bubalus bubalis) bulls.
Muhammad Tariq Javed
; Department of Veterinary Pathology, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
Ahrar Khan
; Department of Veterinary Pathology, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
Razia Kausar
; Department of Anatomy, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
Sažetak
This study was carried out on 16 buffalo bulls (Bubalus bubalis) divided into four age groups, including three healthy (less than 5, 6 -10, and more than 11 year old animals), and one abnormal group (6 10 year old bulls having poor semen quality). The study was undertaken for a one year period divided into five seasons (dry summer, humid summer, autumn, winter and spring). Overall semen volume was 4.67±1.62 ml and showed a nonsignificant difference between age groups, although it was higher (P<0.05) in autumn. Overall semen pH was 6.55±0.50 and was lower (P<0.05) in the 6-10 than in the 11 year old bulls and the abnormal group. It was lower (P<0.05) in autumn while higher (P<0.05) in winter. Colour score was higher (P<0.05) in less than 5 year old bulls. However, it was lower (P<0.05) in the abnormal group than in healthy groups but was lower (P<0.05) in dry summer. Overall mass activity score was 2.65±1.03 and was lower (P<0.05) in more than 11 year old bulls. However, it was lower (P<0.05) in the abnormal than in healthy groups. Mass activity score was higher (P<0.05) in dry summer and spring. Overall sperm motility was 56.89±0.65% and showed no difference in healthy groups, but was lower (P<0.05) in the abnormal group. It was lower (P<0.05) in winter than humid summer and autumn. Overall sperm concentration was 1.00±0.50 millions/ml and was higher (P<0.05) in less than 5 year old bulls. However, it was lower (P<0.05) in the abnormal group. Sperm concentration was lower (P<0.05) in winter. The pH of semen showed negative (P<0.001) correlation with colour (r=-0.38), sperm concentration (r=-0.37), mass activity (r=-0.37) and motility (r=- 0.17). Sperm concentration correlated positively (P<0.001) with mass activity (r=0.86) and progressive motility (r=0.16).
Ključne riječi
semen; volume; pH; colour; mass activity; motility; sperm concentration; buffalo bull; Bubalus bubalis; Pakistan
Hrčak ID:
96188
URI
Datum izdavanja:
22.4.2000.
Posjeta: 1.818 *